Trolley-hanger.



G. H. DAVIS.-

TROLLEY 111mm APPLICATION FILED JAN. 7. 1911. RENEWED JUNE 16, 1914.

1;,124971 2;, Patented Jan. 12, 1915.

UNITED STATES PATENT OFFICE.

CHARLES H. DAVIS, OF PITTSBURGH, PENNSYLVANIA, ASSIGNOR T0 WESTINGHOUSE ELECTRIC & MANUFACTURING COMPANY, A CORPORATION OF PENNSYLVANIA.

TROLLEY-I'IANGER.

Patented Jan. 12, 1915.

Application filed January 7, 1911, Serial No. 601,348. Renewed June 16, 1914. Serial No. 845,489.

To all whom it may concern:

Be it known that I, CHARLES H. DAVIS, a citizen of the United States, and a resident of Pittsburgh, in the county of Allegheny and State of Pennsylvania, have invented a new and useful Improvement in Trolley- Hangers, of which the following is a specification.

My invention relates to means for suspending and steadying trolley wires and other electric line conductors.

The object of my invention is to provide a device of the character above indicated that shall be simple and durable mechaniw cally and adapted for supporting, steadying and insulating relatively high-voltage elec tric trolley conductors.

When electric cars or locomotives are operated at relatively high speeds, it is very desirable to so support the conductor, against which the moving current-collector or contact member operates, as to permit a limited vertical movement of the same at the points of support. It is, however, very undesirable to permit any material lateral movement of the wires at the points of support and devices of this character which have heretofore been employed for both suspending and guiding the conductor have not yielded in a vertical direction with sufficient ease to render them entirely satisfactory. It has been my aim to overcome these difliculties by utilizing a substantially horizontal link connection between the insulated hanger and the trolley clamp which form parts of my complete trolley hanger.

Figure 1 of the accompanying drawings is a partially sectional elevation of a trolley hanger constructed in accordance with my invention. Fig. 2 is an elevation at right angles to that of Fig. 1, certain of the parts being broken away to avoid confusion.

Referring to the drawings, the structure here shown comprises a cross span supporting wire or cable 1, from which a trolley wire 2 is suspended by means of a trolley hanger comprising a cable clamp 3, a supporting arm 4, an interposed insulating rod or bar 5, a trolley clamp 6 and a connecting link 7.

The insulating rod or bar 5 is substantially cylindrical and is enlarged at its ends which are respectively seated in suitable sockets in the members 3 and 4- The cable clamp 3 consists of two similar castings which are securely fastened together by bolts 8, jaw projections 9 being forced into engagement with the supporting cable 1 when the bolts are tightened.

The supporting arm 4 is dividedthrough the socket in which the lower end of the rod 5 is seated, and bolts 10 are provided for securely clamping the parts upon the end of the rod.

A guide loop 11 is secured to one end of the arm 4 and serves, in conjunction with the link 7 and a loop 11, to limit the vertical movement of the conductor.

The trolley clamp 6 comprises a pair of similar jaw members 12 having hook-shaped projections 13 which are adapted to engage longitudinal grooves 14 in the trolley condoctor 2. The shank 15 is flanged at its lower end and cooperates with recessed bosses 17 of the trolley clamp to constitute a swivel connection. The upper end of the shank 15 is formed into the loop 11 which is linked into the loop 11 of the supporting arm 4, the arrangement of parts being such. that a limited vertical movement of the trolley clamp is permitted.

The link 7 is pivotally secured, at its respective ends, to the arm 4 and the shank 15 at such points that the link is approximately horizontal and cooperates with the loop 11 in holding the trolley clamp substantially vertical without interfering with the free movement of the trolley conductor.

The rod or bar 5, which is made of hard wood or other suitable material, may be varied in length to suit the line voltage.

In order to keep the trolley wire clamp more nearly under the supporting wire clamp, the insulating rod or bar 5 extends obliquely downward from the supporting clamp, as shown in Fig. 1 of the drawings. The end of the supporting arm 4 extends into the loop 11 formed on the shank 15 and, consequently, the shank is guided laterally in one direction by the supporting arm and in the other direction by the loop 11.

It will, of course, be understood that my invention is not limited to the specific structure illustrated and described, and I desire that only such limitations shall be imposed as are indicated in the appended claims.

I claim as my invention:

1. A hanger for trolley wires comprising a support-engaging means, an insulating rod or bar having one end attached to said supportengaging means and projecting downwardly therefrom, a trolley wire supporting arm projecting laterally from the lower end of said rod or bar, and a trolley- Wire clamp loosely suspended from the free end of said arm and having a guide-link connection to the other end of said arm.

2. A hanger for trolley wires comprising a support-engaging clamp, an insulating rod or bar rigidly secured thereto and extending obliquely downward therefrom, a trolley-wire clamp, a laterally projecting means rigidly secured to the lower end of the rod or bar, and'means for loosely suspending the trolley-wire clamp from said laterally projecting means to permit limited Vertical movement thereof.

3. A hanger for trolley wires comprising a support-engaging clamp, an insulating rod or bar secured thereto and extending obliquely downward therefrom, a trolleywire clamp having a vertical looped shank,

an arm secured to the lower end of the insulating rod or bar and projecting through the loop of the'shank, and a link connecting the arm to the trolley-wire clamp.

4. In an overhead trolley structure, the combination with a supporting wire, a clamp secured thereto, an insulating rod or bar extending obliquely downward from the clamp and an arm projecting laterally from the lower end of the insulating rod or bar, of a trolley conductor, a clamp therefor having a looped shank through which the end of the said arm projects, and a link connection between the trolley-conductor clamp and the arm.

In testimony whereof, I have hereunto subscribed my name this 30th day of Dec. 1910.

CHARLES H. DAVIS.

Witnesses JAY R. PALMER, B. B. HINEs.

Copies of mi patent may be obtained for five cents each, by addressing the Commissioner or Iatents, Washington, D. G. 

